11, 13, 17, 19, 23, 29, 31, 37, 41, (.....) (a) 43        (b) 47         (c) 53        (d) 51

13, 17, 19, 23, 27, 31

4, 11, 17, 22, _____, 29, 31, 32

29, 37, 21, 43, 13, 53, 5

8, 43, 11, 41, ?, 39, 17

11, 13, 17, 25, 32, 37, 47, ?, 71, 79, ?, 109, 119, ?

41, 43, 47, 53, 59, 59, ?, 67, 71, 73, 79, ?, 89, 97

41, 43, 47, 53, 61, 71, 73, 81 (a) 61 (b) 71 (c) 73 (d) 81

Prepare a frequency table of the following scores obtained by 50 students in a test: 42, 51, 21, 42, 37, 37, 42, 49, 38, 52 7, 33, 17, 44, 39, 7, 14, 27, 39, 42 42, 62, 37, 39, 67, 51, 53, 53, 59, 41 29, 38, 27, 31, 54, 19, 53, 51, 22, 61 42, 39, 59, 47, 33, 34, 16, 37, 57, 43